Saw-filing device.



No. 699,206. Patented may 6, |902.

L. M. MILLER.

SAW FILING DEVICE. (Applicazio'n med Jan. 13, 1902.) (No Model.) 2 sheets-sheet Wl TNESSES.- EWE/v TOR xmr:

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No. 699,206. I Patented May 6, |902. AL. M. MILLER.

SAW FILING DEVICE.

(Application iled Jan. 13, 1902.) (No Model.) I 2 Sheets-Sheet 2.

W/ YNESSES: N j A/VE/VTOR f UNITED STAT-Es PATENT OFFICE.

L'UDVIO M. MILLER, OF WINNECONNE, WISCONSIN, ASSIGNOR OF ONE-HALF TO GEORGE MARIN, OF WINNECONNE, WISCONSIN.

SAW-FILING DEVICE'.

SPECIFICATION forming part of Letters Patent lNo. 699,206, dated May 6, 1902. Application led January 13, 1902. SerialNa 89,534. (No model.)

To all whom it may concern:

Be it known that 1, LUDvIo M. MILLER, a citizen of the United States,residin g at Winneconne, ini'th'e county of Winnebago and State of Wisconsin, have invented new and useful Improvements in Saw-Filing Devices, of which the followingis a specification.

A This invention relates to saw filing or sharping devices,l the object being to provide a sawfiling de vice which is carried by the saw-blade and is movable thereon, each movement over the blade skipping one tooth, so as to operate upon alternate "teeth, the frame being provided with= a AJrile holder and gages, which gages are adjustable, so that when setthe' saw may bejfiled as desired with any pitch'or angle, the teeth being of a 'uniform depth. l

The invention consists more particularly in the construction and combination of the parts, as will be hereinafter set forth, and spej ciically pointed out in the claims.

` In the accompanying drawings, which illustrate one embodiment of my invention, Fig/ure 1 is a perspective view of a saw-filing device made inj accord with my improvement. Fig. 2 is a plan view, the parts being shown in full linesinone position and the .file-carrying frame in dotted lines in another position. Fig. 3 is anlinverted plan view of a part of the frame. `Fig. 4is a detail perspective view of a gage used for limiting the downward movement of the file. Fig. 5 is a detail per-v spective view of one end oftheframe.

On the drawings, A refers to aframe which is tapered longitudinallyl when viewed from the top or bottomyandrthis frame on its upper sideis cut away to provide a recess or depressed portion A', into which the file will enter in use. The wider end of the frame A is shaped to provide a disk a, which is integral withthe frame and extends at rightangles with the top, said disk being provided with gage-marks a and a central apertureg'through which is passed =thestem of a set-screw b, which engages with the nut b', said screw and nut holding linvplace a frame B. The setscrew b engages a plate C, which is shaped so as to provide lugs c, which overlie the upper and lower edges of the curved frame B, and this'pa'rt C has a pointer c', which is movable over the gage-marks-of the disk.

Thecurved frame B has a central longitu screws for holding them rigid thereon after/ they have been properly positioned or adj usted.

. F refers to cylinders, which are of such size externally as to t snugly within the rings D', to which they may be rigidly connected by setscrews d, carried by the rings. The cylinders are also provided with set-screws f and eccentricallywith triangular openings through-the heads of the cylinders, these openings commencing at the center of the headsand eX- tending toward the periphery thereof, and by such construction the corner of a triangular file may be held by the heads or cylinders, so that said file and heads maybeJ turned to bring different corners of the file in position foruse; also, to provide means whereby a greaterrange of adjustment is provided for. By providing openings forthe iile which are to one side of the center or axis of the cylindrical` heads F F the heads'when turned will place theiile carried thereby so each corner lateral adjustment forthe corners of the file.

are provided to meet the requirements as to adjustments in filing dierent saws, as the teeth of different saws are differently spaced. This adjustment is also used when the flat faces of the file are downward or at a slight angle, as in leveling the teeth. The set-screws f clamp the iile in place, and the set-,screws CZ hold the heads F against rotation and" permit them to be adj usted longitudinally to suitfiles of different lengths.

In practice a tool-handle may be inserted in one or both of theheads, though the device may be readily reciprocated by grasping the end ofthe yoke. j

The narrower end of .the frame A carries beyond the recess A' an upwardly-inclined portion A2, and toward the end the sides are shaped to provide upwardly-projecting ears A4 with perforations through which passes the fulcru n1 of a thumb-lever G, said lever having a thumb-piece and depending side members, to which are pivoted links g g. The thumb-piece G is held normally upward by a spring G', and the frame A has an extended portion,said frame being cut away at its sides, as shown in Fig. 3, and is also provided with slots h, through which pass screws it', said screws engaging tapered or wedge-shaped blocks H I-I, which are held within the frame and are reciprocated when the thumb-lever is depressed.

The inclined portion A3 of the frame A carries a gage K, having slotted sides 7c, a bar K', which lies beneath the bail, and a pawl K2, which is adapted to engage with the teeth of the saw. The part K is held upon the inclined portion A3 of the frame A by asetscrew which passes through the slot k therein and engages the threaded aperture a", the end of the setscrew passing through an inclined slot in the gage-plate L, so that when such gage-plate is moved laterally it will adjust the part K, raising or lowering the same with respect to the frame to limit the downward movement of the reciprocating iileholder, said file-holder and pawl occupying a relative position to the teeth of the saw as to the depth of said teeth. The lower portion of the gage K is bent, as shown, to provide a pawl K2, and though it is integral with the bar K it is of such thickness and temper that it will give or spring to allow the frame to be slid over the saw-blade and carry the file-carrying frame with it when the lever or thumb-piece G is depressed to loosen the wedges. The set-screw K3 is provided with smooth portions which pass through the slot 7c and are positioned opposite the sides of the same,the threads engaging the threaded aperture a4,while the end which is without threads passes through the diagonal slot of the gageplate. The bail E by engagement with the bar K', which is integral withl the pawl K2, will limit the movement of the le toward the saw-teeth, the adjustment of one part making a corresponding adjustment of the other part.

In use the blade of the saw is passed between the wedges H H, and the le-carrying frame is adjusted to position the file at the proper angle or angles, which is accomplished by adjusting the frame B both longitudinally and pivotally upon the set-screw, and after the adjustments are made the set-screw is tightened. By turning the cylindrical leholders such adjustments of the file as are desired may be made. rlhe gage to regulate the depth of the tooth or teeth is then set, and after one tooth has been filed the thumb piece or lever is depressed, which will move the wedges out of engagement with the saw, so that the frame may be moved manually over the teeth thereof, the frame being held against movement in one direction by the spring-pawl K2, which engages the teeth of the saw so the frame can be slid in one direction only upon the saw, such movement skipping one tooth, and this is continued until every other tooth of the saw-blade has been filed, and when that is accomplished the fileholding frame is adjusted to the same angle and pitch on the opposite side of the frame, and the unsharpened teeth are then filed.

This device is comparatively simple in construction and a saw can be quickly sharpened by the use thereof, even in the hands of an inexperienced person. By turning the cylinders or file-holders F the file can be placed so that one of its iiat faces will be above the teeth when it is desired to file the teeth to bring them on the same plane.

I am aware that it is not new to provide a saw-filing device with a reciprocating lecarrying frame, said frame having means for limiting or guiding the movements of the file, and I therefore do not claim such a device broadly; but

What I do claim as new, and desire to secure by Letters Patent, is

1. In a saw-filing device, a frame having depending sides which converge longitudinally, a reciprocating file-holding frameu connected thereto, longitudinally-'movable wedges between the depending sides of the frame, and means for moving said wedges, substantially as shown.

2. In a saw-filing device, a frame having depending and converging sides, a movable {ile-carrying frame mounted thereon, a pawl connected to the first-mentioned frame for engagement with the teeth of a saw, wedges mounted on the frame and connected to the` wedges, substantially as shown. y V

4. In a saw-filing device, a frame in which the top and sides are partially cut away to provide a recess, a pawl carried by the frame to depend below the top, a tile-carrier reciprocally attached to the frame, wedges maintained between the sides of the frame, a lever fulcrumed on the frame, and means for connecting the lower members of the lever to the wedges, substantially as shown.

5. A frame for a saw-filing device made up to present longitudinally-converging sides and top, an end portion which projects up= ward at right angles to the top, an inclined portion designed to support a gage, lugs which extend above the top, the frame being cut away centrally and provided with slots through the sides, in combination with a file holder attached to the projecting portion at IOO Iig

one end of the frame, a gage carried by the intermediate inclined portion, a lever fulcrumed on the lugs, and bars connected to the lever and to Wedges positioned between the converging sides, substantially as shown.

6. In a saw-filing device, the'combination with a file-holder, of cylindrical heads adj ustable longitudinally and rotatively attached to the file-holder, each head having'to one side of its center openings to receive the file, and means for clamping the ile in such openmgs.

7. The combination with the frame of a sawiling device said frame having Wedges which are longitudinally adjustable in the frame to clamp against the saw and hold the frame over the teeth thereof, a pawl adapted to en` gage the saw-teeth, a gage movable in conjunction with the pawl'to limit the movement gage, vsubstantially as shown.

" In testimony whereof I have hereunto set my handin presence of two subscribing Wit nesses.

LUDvIo M. MILLER.

Witnesses LIZZIE REGEL, M S; MILLER. 

